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    Known Problems In PCCTS - Last revised 7 June 97
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#1.  In 1.33 vanilla and all maintenance release

        A rule with all alternatives being guess blocks causes an infinite loop
       in C mode (but not C++ mode).

            test  : (test1)?
                  | (test2)?
            ;
            test1 : (Word Word Word Word)?
                  | (Word Word Word Number)?
                  ;
            test2 : (Word Word Number Word)?
                  | (Word Word Number Number)?
                  ;

        This contains the pathological construct of a rule in which all
        alternatives are guess blocks.
